Valve-bag.



Patented Dec. 25, I900.

D M. 6 WA DB 0 w L A CM & 0 4 6 6 0 N (Application filed Nov. 12, 1900.)

(No Model.)

UNITED STATES PATENT OFFICE.

IRVING G. WVOODWARD, OF CHICAGO, ILLINOIS.

VALVE-BAG.

SPECIFICATION forming part of Letters Patent No. 664,703, dated December1900- Application filed November 12, 1900. Serial No. 36,260. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, IRVING C. WooDWARD, a citizen of the United Statesof America, and a resident of Chicago, in the county of Cook and Stateof Illinois, have invented certain new and usefulImprovements inValve-Bags, of which the following is a specification.

My invention relates to the class of bags, sacks, and other flexiblereceptacles known as valve-bags, in which an internal flap serves as aclosure for the mouth of the bag or sack.

The main objects of my present invention are to provide an improvedstructure in a bag of this class which will avoid the necessity ofmaking curved seams in sewing the bag, and will thus facilitate themanufacture of same, to provide for a number of valve-controlledfilling-apertures along the end of the bag inward of its corners, and toprovide a structure in a bag of this class which will permit same torest evenly on either end after the bag is filled. I accomplish theseobjects by the means hereinafter described, and shown in theaccompanying drawings, in which Figure 1 is an elevation of a bagconstructed according to my invention turned wrong side out and showingthe bag partly complete. Fig. 2 is a side elevation of the finished bag.Fig. 3 is a vertical section of same on the line 3 3 of Fig. 2. Fig. 4Cis a top plan of the bag shown in Fig. 2.

The bag shown is formed of a sheet of textile fabric which is doubledupon itself at the crease l and has its edges 2 sewed together by theseam 5. When the seam 5 is made,the material of the bag is wrong sideout, as shown in Fig. 1. While the material is in this position, one ofthe ends of the bag is sewed to form the seams 6 7 8 and 9 1O 11. Saidseams have their ends separated to form the fillingapertures 12. It willbe seen that the scams 6 to 11, inclusive, are made substantiallyparallel with the edges 13 of the bag. The edges 14 of the bag are notsewed together until the bag has been turned right side out and to theposition shown in Fig. 2. It will be seen that the edges 13 are nowwithin the bag, as shown in Fig. 2. The edges 14 are then securedtogether by the seam 15. This forms a bag which is closed on all sidesexcept at the filling-apertures 12. The material between the seams 6 7 8and the edges 13 forms the valvefiaps 16. It will be seen that all ofthe seams in said bag are substantially rectilinear. This is found to beof advantage in sewing the bags with a machine.

The operation of the device shown is as follows: The bag will be filledthrough the apertures 12. When the same is filled,the filling materialwill press against one side of the flaps 16, and thus close saidapertures 12. To securely close said apertures, the bag will be turnedwith the edges 14 toward the top. It will be seen that the bag will thenrest evenly on the end at the seams 6 7 8.

It will be understood that some of the details shown may be alteredWithout departing from the spirit of my invention. I therefore do notconfine myself to such details except as hereinafter limited in theclaims.

What I claim as my invention, and desire to secure by Letters Patent,is+

1. As an article of manufacture a bag or sack of the class described,having its side walls folded inwardly at one end to form the Valve-flaps extending entirely across said end, said flaps being securedtogether by a pair of seams each extending from one of the side edges ofsaid flaps along the base of same and terminating a considerabledistance apart to provide a filling aperture between their inner ends,substantially as described.

2. As an article of manufacture a bag or sack of the class described,having its side walls folded inwardly at one end to form the valve-flapsextending entirely across said end, said flaps being secured together bya pair of seams each extending from one of the side edges of said flapsalong the base of same and terminating a considerable distance apart toprovide a filling-apertu re between their inner ends, and a second pairof seams each eX- tending from one of the side edges of said flaps alongthe inner edges of same and terminating a considerable distance apartand near said filling-aperture, substantially as described.

3. As an article of manufacture a bag or sack of the class described,having its side walls folded inwardly at one end to form the valve-flapsextending entirely across said end, said flaps being secured together bytwo pairs of parallel seams, each pair extending from.

the side edges of said flaps, substantially pargvide a filling-aperturebetween their inner allel withtheends-ofi the bag and terminating iends;and a: second pain of se'aemsseach exa considerable distance apart, toprovide a tending along the inner edges of said flaps 1'5 7filling-aperture between their inner ends, subfrom opposite sides andterminating a con- 7 5 'stantially as described. siderable distanceapart below and near said 7 j j);

4. As an article of manufacture a bag or filling-agerture, substantiallyas described. sack of the class described; having its side I SignedatiChieago, Llli'noigthis 10th day of walls folded inwardly at one endto form the November, 1900.

valve-flaps, said flaps being secured together IRVING O. WOODWARD. so bya pair of seams each extending along and Witnesses:

parallel with the base of said flaps and termi- WM. R. RUMMLER, natingaconsiderable distance apart to pro- GLEN O. STEPHENS.

